Image Encryption using Different Techniques for High Security Transmission over a Network

Digital image is a collection of the pixel with different intensity values, and each image is in the form of n*m, no of pixel (where n,m is no of Rows and Column) when we transfer a digital image from source to destination through a network, it need to be encrypted at the source side and decrypted at the destination side. Encryption is process of hiding the information, when the information is transferred through a network and decryption is the process of extracting the information from an encrypted information. For this encryption and decryption, we need some encryption and decryption algorithm. Security of a data or information is very important now a day in this world. And everybody want a secure network, for transmission of his information, being a well secure network there is also a chance of hacking a data, most of the banks and other organization where data security in important are well secured but there is also a online fraudulent is there. So we need a more secure data with high security environment. Generally, we do high secure working environment and data is also secure with a encryption and decryption method or technique, but that techniques uses only one encryption and decryption keys